1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbf44099729557c8f28ecb8a075966de40612fd92eec2423854b6ca4e2a116a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8068888d-8600-44c4-b459-4e41d14185e9.json and https://artists.proofprofile.net/proofs/artist/8068888d-8600-44c4-b459-4e41d14185e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ed904e897e1367c279aec288a403893958ba4c80aeba704f9a38b888503b2c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e82d92ff8ccde1a8ba11db959db574a6cfeb0ee4c282f2b0eca6039fc28342. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aedbd3097fea522ac0371bcef1472d96a1c9bdac5dc39d45cb7a83c50c6e3d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696a61aaec975a3cbd07ccffcf0f5ad30881648350b4d849067668810f52f43. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRJC10500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a69f0fb453820f31e4436c21e50fdae0a222d499d6ddc0f9c4c860aadf95d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRPC20500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b05b2f8ee26b06362df308c915cfd6b9af42bb82a4afe68b090053b5c1e5a87. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bc52ff8ec887b0e6ac89d9b5dedfda6351d8bc7473d61bf86d2de99f69970d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea7a91a33e8995341c0f3812d59565124e86ab576187232a3123380910d73a2. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0900029.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de95242692b01205789d24d1b00ea45ae49211f7aa3bae976997e9b8354f4ad. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc158cb5102b74dacc59f6f173e3b96335a09e123dbe5278fb7ab82f990aec2be. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRCZZ0900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390ae33900b06c92681106c1f466b8ec502b601171cd1546c84ba81b11f8ec21. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR6CE2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b5ccd1cdb1692484d4b42eeba5f59b6e71ad4088f5a45580b22d6369eccfa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542222519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b34be9d9383a9f188a4493becb90d237c2e1f94d2c5477e26322604f50a3988. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d02284eda96ee96a410a2b54cda11e13fe092f3ef699050825d4ff2240bf657. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAPX1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd2d8fe399b156c95117e58f299c8a2a68ef54c6411a32f5f6c25122fd1f508. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAPX1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e9d25f7190f3e8b907ba9d3d5534853476d9b61e9940bd809880f9a32a5675. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAPX1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cff9b996c381389422776ea54d2e7c44196605b7bf8f9c3780f82240465d5ae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ32030259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acc8b43d7fb7b40765ebddae2ccb4150c1c50d6aed09bb8ba002231d764c2c4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ41991725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec2f8aa6eff710922c42ed64fa5d0709e4b3655eb1ff388a7a4325df70849ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81501030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3b51fd2bf45c9c46612e3125454056081e1d9b61dc3c5c52d5d4453ca46860. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAPX1800052.
Medley Black (feat. Paulo César Baruk, Luciano Claw, Lito Atalaia & André Mota)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffe925b5cf2eadbdaf158893c7145437e51ca22850b5fb80ea00d5bd299b5f6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4a4ec9a8db0e12beb1d18603e93ea7e1062132be5cfb7882151fd9564ae649. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAPX1800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223b77573583f00d868f50de8895c40bdd15a739b18d569a26ab154daf792c4d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAPX1800006.
A Caixa D'àgua (feat. Rogério Sarralheiro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba12763a8a359d05cbc0f0f179573226b90e6cc368b0429c4e782a9fe8d88b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f70ba9e80e499143248c2ed3389faed1f9644336c1fb79ea30117454fc72d00. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81501031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d1b777504fba368975ddae57ae6019fd79bb242c164fe6400777597b8b3dc0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81200156.
Há Poder (feat. Paulo César Baruk & Coral Resgate)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9cf1d934e749d7e48387edd8633b9b725ffd84c0cd24702c47d1104be591cc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f5833a15b8a801d1053de30e874cfcd52111ae687e63d3f8f3b8d9c4044ae9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1682448ba2214e26fee8a4fc61e8b6f8ce13c81369d2e739e3465be6677dfc3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRYY81501022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409d018e51f6f9bf5de392ab86b93a6f70127b6a39ed8e54e06fbddb26561b93. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXAPX1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caf363792d5367ec11bea4165cbfc834a290bedeb624bf4c94fbf2528ee39aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRT321700012.
Mais Perto Quero Estar (feat. Jéssica Augusto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0dccd957b5c67c55b76a550a55665133695674385e53970ecc534e4445dcb6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BR9071400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b1103b27de738d43e381f2d1e080566c68e48666fa9066d8c608bdb156040c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2372680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17db97154ffbfe4816850f59f4b8c86349c0cc49a995980f3de78dfb0d66ab5d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2372697.